Note: For information about using a DNS server to manage entries, in place
of host tables, refer to 421.
7. Configuring local domain and host name
8. Starting TCP/IP
9. Verifying TCP/IP connection
10. Saving the TCP/IP configuration
Important Note:
Toperform the configuration steps discussed throughout this chapter, you
need the special authority of *IOSYSCFG defined in your user profile.
Step 1—Configuring a Line Description
AS/400 TCP/IP supports various local area network (LAN) and wide area network
(WAN) connection types: Ethernet, token-ring, SDDI and FDDI, wireless LAN, X.25
SVC, and permanent virtual circuit (PVC), Async (for SLIP), Point-to-Point (PPP)
and frame relay. Refer toAppendix A. Configuring a Physical Line for TCP/IP
Communication for information about how to configure an Ethernet line for TCP/IP
communications.
These are the important parameters for configuring a line description:
vLine description name
vResource name
vLocal adapter address
vEthernet standard
vSource service access point (SSAP) list.
The SSAP X'AA' required for an IEEE 802.3 Ethernet is automatically allocated if
you use the *SYSGEN special value.
When TCP/IP starts an interface, the line, controller,and device descriptions are
varied on automatically. If the controller and device descriptions for a line do not
exist, TCP/IP creates them automatically when it attempts to start an interface using
that line. This happens at TCP/IP startup time if the TCP/IPinterface that is
associated with the newly configured line is set to AUTOSTART*YES.
Step 2—Configuring a TCP/IP Interface
In an AS/400 system, each line that connects to a TCP/IPnetwork must be
assigned to at least one Internet address. Youdo this by configuring, or

adding

a
TCP/IP interface. The additional interfaces are logical interfaces, not physical ones.
These logical interfaces are associated with a line description.
An interface identifies a direct connection to a network using TCP/IP and a physical
medium (communications line). Youmust consider the following when defining an
interface:
Internet address
A 32-bit address assigned to hosts using TCP/IP.It is associated with the
line description.
30 OS/400 TCP/IPConfiguration and Reference V4R4